What indicates the date a sales order becomes invalid?

The indication of when a sales order becomes invalid is represented by the End Date. This date marks the point at which the sales order can no longer be processed or is no longer active within the system. The End Date effectively sets a boundary for the validity of the sales order, helping the organization manage and streamline its order processing by clearly defining when an order should no longer be executed.

In contrast, the other dates mentioned serve different purposes. The Start Date typically indicates when an order is created or when processing begins, while the Due Date signifies when the order is expected to be fulfilled. The Completion Date usually reflects when the order has been fully processed and fulfilled. Therefore, none of these options provide the same function as the End Date in signaling the sales order's invalid status.